2017654780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{998839}}^1$

素因数の和:998949

約数の個数: 24

約数和(自身を含む): 4279030560

約数和(自身を除く): 2261375780

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 998839, 1997678, 3995356, 4994195, 9988390, 19976780, 100882739, 201765478, 403530956, 504413695, 1008827390, 2017654780]

約数ペア:

[(1, 2017654780), (2, 1008827390), (4, 504413695), (5, 403530956), (10, 201765478), (20, 100882739), (101, 19976780), (202, 9988390), (404, 4994195), (505, 3995356), (1010, 1997678), (2020, 998839)]